Thaum tsev lossis kho, txhua tus sim siv cov khoom siv txhim khu kev qha, muaj zog thiab ruaj khov hauv tsev. Tom qab tag nrho, tsis muaj leej twg xav qhib kev sib txuas lus rau kev kho thaum muaj xwm txheej ceev. Yog li ntawd, hauv cov cua sov, cov kav dej thiab lwm qhov chaw, feem ntau siv cov yeeb nkab hlau-yas. Nws yog ruaj thiab ruaj khov heev. Cov yeeb nkab no yog dab tsi, nws tau npaj li cas thiab xaiv nws kom raug? Peb yuav tham txog qhov no hauv peb tsab xov xwm hnub no.
yam ntxwv
Hlau-yas yeeb nkab yog cov khoom lag luam thoob ntiaj teb siv los tso cov kav dej thiab cua sov.
Ua tsaug rau kev sib xyaw ntawm ob yam khoom (hlau thiab polymer), cov kws ua haujlwm tau tswj hwm los tsim cov qauv tsim uas tsis ntshai ntawm qhov kub thiab txias thiab lwm yam cuam tshuam tsis zoo.
txiaj ntsig
Qhov zoo ntawm qhov tsim no yog:
- High service life.
- Tsawg thermal conductivity. Cov kav hlau-yas zoo li no muaj xoom xaim hluav taws xob, uas yog vim li cas lawv feem ntau siv los tso cov kav dej kub.
- Resistant rau qhov kub thiab txias.
- Tightness. Hlau-yas yeeb nkab 20 hli tsis cia lub teeb thiab oxygen dhau.
- Frost resistance. Tus tsim tsis deform txawm nyob rau ntawm -50 degrees Celsius.
- Corrosion kuj. Tsis zoo li steel counterparts, cov qauv no tsis xeb txhua.
- No thermal expansion.
- Scale resistance.
Tsim
Txawm li cas los xij lub thickness ntawm cov hlau-yas yeeb nkab (16 hli los yog 20), nws muaj tib lub qauv thiab tsim. Thiab nws muaj ob peb txheej:
- xov xwm;
- tseem;
- external.
Txhim txheej
Qhov tseeb, qhov no yog qhov txhawb nqa ntawm tag nrho cov qauv. Cov txheej no yog ua los ntawm txhuas. Qhov no ua kom muaj kev hloov pauv siab thiab tib lub sijhawm muaj zog ntawm cov khoom siv polymer. Cov txheej no ua tau ntau yam haujlwm ib zaug:
- Tiv thaiv cov qauv los ntawm kev nthuav dav. Qhov no tuaj yeem tshwm sim thaum txheej yas yog cua sov.
- Tiv thaiv cov yeeb nkab los ntawm kev puas tsuaj. Thaum khoov, kev ncaj ncees ntawm cov qauv yog khaws cia tag nrho. Qhov no yog ib tug tshwj xeeb feature raukev teeb tsa hauv qhov chaw nyuaj mus cuag.
- Tiv thaiv kev poob siab. Qhov siab dua qhov ntsuas no, qhov tuab ntawm aluminium txheej. Raws li txoj cai, lub thickness ranges ntawm 15 mus rau 60 pua ntawm ib millimeter.
- Tiv thaiv kev nkag mus rau oxygen. Qhov no pab tiv thaiv kev tsim ntawm xeb thiab lwm yam deposits nyob rau hauv cov kab noj hniav ntawm cov qauv.
Cov kav hlau yas twg zoo dua siv? Yog tias kev kho vaj tse nyob hauv tsev lossis chav tsev, qhov kev xaiv zoo tshaj plaws yog cov khoom siv nrog lub thickness ntawm 0.3 mus rau 0.5 millimeters. Cov qauv zoo li no muaj zog heev thiab tib lub sijhawm hloov pauv tau yooj yim, uas yuav tso cai rau koj yooj yim rau nruab cov kav hlau-yas hauv cov chaw nyuaj.
Vim li cas koj yuav tsum tsis xaiv cov khoom uas muaj txheej txheej tuab? Muaj ob qho laj thawj rau qhov no. Ua ntej, xws li kev tsim khoom kim heev. Thiab qhov thib ob, kev teeb tsa ntawm cov kav hlau-yas nrog cov txheej tuab tuab yog qhov nyuaj heev. Nyob rau tib lub sijhawm, koj tsis tuaj yeem yuav cov khoom nyias nyias. Qhov no siv rau cov kav dej uas muaj txheej thickness tsawg dua 30 pua ntawm ib millimeter. Cov qauv zoo li no tuaj yeem deformed txawm tias me ntsis khoov.
txheej sab nrauv thiab sab hauv
Cov khoom ntawm cov txheej txheem sab nrauv thiab sab hauv ntawm cov kav dej kuj tseem ceeb heev. Yeej, cov linear polymer PE-PT los yog polyethylene PEX yog siv hauv kev tsim khoom. Cov khoom no yog cov khoom siv ua haujlwm siab uas muab cov qauv tsim muaj zog thiab kev tiv thaiv ib puag ncig.
Tseem ntawm lub khw muag khoom koj tuaj yeem nrhiav taulow-pressure polyethylene. Cov no suav nrog cov khoom siv nrog cov cim hauv qab no:
- PE.
- PE-HD.
- YHDPE.
- PE-RS.
Thaum xaiv, koj yuav tsum ua tib zoo saib tias cov khoom saum toj no tsis tiv taus cov hluav taws xob ultraviolet, uas yog vim li cas lawv sai sai siv tsis tau. Polyethylene ntawm qhov tseeb cim (PE-RS) ntxiv rau muaj kev txwv kub. Thaum lub sijhawm ua haujlwm, cov cua sov yuav tsum tsis pub tshaj 75 degrees Celsius. Txwv tsis pub, polyethylene yuav pib yaj. Qhov no ua rau tsis tuaj yeem deformations ntawm cov yas contraction, thiab tom qab ntawd mus rau cov yeeb nkab rupture. Koj yuav tsum tsis txhob yuav cov khoom lag luam nrog cov cim no, txawm hais tias lawv yog tus pheej yig tshaj plaws ntawm tus nqi ntawm lub khw.
Yuav ua li cas ntxiv?
Thaum yuav, koj yuav tsum xyuam xim tsis yog rau cov cim ntawm cov kav dej. Cov kev txwv hauv qab no kuj yuav tsum raug coj mus rau hauv tus account:
- Chaw tsim tshuaj paus.
- Stitching method.
- Nominal siab.
- A nruab nrab haum rau kev thauj khoom.
- Hnub tsim khoom.
- Certificate of conformity.
About no peev txheej
Lub neej nruab nrab ntawm cov kav dej ntawm hom no yog li 30-50 xyoo. Cov neeg tsim khoom lawv tus kheej muab kaum xyoo lav rau lawv cov khoom. Txawm li cas los xij, nws yuav tsum nco ntsoov tias cov hauv qab no cuam tshuam rau cov peev txheej:
- High siab (ntau tshaj kaum qhov cua).
- Lub xub ntiag ntawm tshav ntuj.
- Tiv tauj nrog qhov kub siab los ntawm sab nraud.
Tsuas yog ua raws li cov cai ua haujlwmcov khoom yuav ua haujlwm rau lub sijhawm muab los ntawm cov chaw tsim khoom.
khoom rau cua sov
Nws tsim nyog tham txog cov qauv no. Hlau-yas kav rau cua sov yog tsim rau qhov kub ntawm 95 degrees Celsius. Qhov parameter no ua haujlwm rau cov khoom. Hauv qhov xwm txheej no, cov khoom tsis deform thiab tsis poob nws cov yam ntxwv. Tab sis qhov kub ntawm 110 degrees los yog ntau tshaj yog twb suav hais tias yog xwm ceev. Tau kawg, hnav thiab tsim kua muag yuav tsis tshwm sim tam sim ntawd. Txhua lub yeeb nkab muaj nws tus kheej lub sij hawm luv luv ntawm kev nyab xeeb. Tab sis yog tias qhov kub no cuam tshuam tas li, lub neej ntawm cov khoom yuav raug txo los ntawm ob peb zaug.
Cov chaw tsim khoom hais li cas txog kev ua haujlwm hauv huab cua txias? Qhov ntsuas kub ntawm cov yeeb nkab nrog cov kua tsis deform yog -20 degrees Celsius. Qhov taw qhia thaum muaj xwm ceev yog 40 lossis ntau dua degrees ntawm Frost. Hauv qhov no, kev xau tuaj yeem tshwm sim.
Sizes
Thaum xaiv cov kav hlau-yas rau cua sov lossis kav dej, koj yuav tsum tau coj los ntawm qhov ntev ntawm cov khoom. Feem ntau, cov qauv no yog muag hauv bays los ntawm 50 mus rau 200 meters ntev. Tab sis koj tuaj yeem yuav khoom thiab luv luv. Txhua yam nyob ntawm qhov ntsuas ntawm qhov kho.
Nws tseem ceeb heev uas yuav tau xav txog lub puab txoj kab uas hla. Qhov thinnest yog cov yeeb nkab hlau-yas 16 mm. Yuav xaiv dab tsi rau ib lub tsev ntiav lossis chav tsev? Cov kws tshaj lij qhia txog kev yuav khoom ntawm cov kab me me. Hlau-yas yeeb nkab 20 mm yuav yog qhov kev xaiv zoo tshaj plaws. Tab sis rau qhov chaw me me, tus qauv 16 hli yuav txaus.
About installation
Tautxhawm rau txuas cov kav dej, koj yuav tsum muaj cov fittings tshwj xeeb. Lawv yuav tso cai rau koj ua lem, xaim thiab kev teeb tsa ntawm cov qauv sib txawv. Piv txwv li, 16 hli hlau-yas yeeb nkab tuaj yeem yooj yim ua ke nrog 20 hli. Thiab vice versa. Tab sis nyob rau hauv thiaj li yuav tsim kom muaj airtight, nws yog tsim nyog siv tshwj xeeb presses los kho nws. Rau cov kav hlau-yas, tag nrho cov khoom siv raug muag. Lawv tuaj yeem yog mechanical lossis hluav taws xob. Cov yeeb nkab yas presses yog dab tsi? Cov no yog crimping pliers nrog tes, uas yog muab nrog couplings ntawm txawv diameters rau crimping. Muaj ntau ntau hom fittings rau txuas hlau-yas kav:
- nias fittings.
- Collet.
- xov.
- Txhob Cia Siab.
Lawv txhua qhov sib txawv ntawm txoj kab uas hla thiab ua los ntawm cov khoom sib txawv. Tab sis, raws li kev xyaum qhia, qhov kev xaiv zoo tshaj plaws yog threaded ntsiab.
Kev teeb tsa tuaj yeem ua tiav hauv ob peb theem. Rau qhov no koj xav tau:
- Txiav tawm cov yeeb nkab uas xav tau nrog txiab tshwj xeeb.
- Tshem cov hlau burrs ntawm cov npoo nrog cov ntaub ntawv koob.
- Thov cov roj silicone rau lub txiv mis haum.
- Nruab lub union txiv ntoo ntawm cov yeeb nkab thiab ferrule.
- thawb cov khoom mus rau qhov haum haum (nws yog ib qho tseem ceeb kom tsis txhob ua rau O-rings puas).
- Tighten kev sib txuas nrog wrenches.
Rau crimping xovxwm fittings, ib lub cuab tam tshwj xeeb yog siv - xovxwm tongs. Ib qho piv txwv ntawm nws txoj haujlwm tuaj yeem pom hauv daim duab hauv qab no.
Nyob hauv qab no peb ua tibzoo saib cov yeeb nkab uas nrov tshaj plaws uas tau txais kev tshuaj xyuas rave.
Stout
Nov yog lub tuam txhab Italian uas tsim cov kav dej rau cua sov. Cov neeg siv tshuaj xyuas qhia txog qhov zoo li kev ntseeg tau thiab kev nyab xeeb ntawm kev tsim. Cov khoom no zoo meej rau peb cov kev ua haujlwm. Stout tsim cov kav dej nrog txoj kab uas hla ntawm 16 millimeters. Tag nrho phab ntsa thickness yog 2 hli. Qhov ntim ntawm cov dej hauv ib 'meter' yog 0.11 litres. Ua los ntawm mesh polyethylene. Cov yeeb nkab yog hloov tau yooj yim, ua rau nws haum rau lub vojvoog nqaim.
ProExpert
Nov yog cov chaw tsim khoom hauv Lavxias uas tau tsim cov kav dej tau nees nkaum xyoo. Lub tuam txhab no tsim cov khoom nrog lub cheeb ntawm 20 millimeters los ntawm PPR-AL-yas. Cov kev tshuaj xyuas hais tias ProExpert cov khoom muaj qhov kub thiab txias heev.
V altek
Nov yog ib lub chaw tsim khoom hauv Suav teb. Cov neeg yuav khoom hais tias cov kav dej no zoo tagnrho rau cov cua kub cua sov. Cov chaw tsim khoom muab kev tiv thaiv kaum xyoo. Txawm li cas los xij, cov kev tshuaj xyuas sau tseg ib qho kev rho tawm. Qhov no yog qhov me me ntawm cov kav dej (tsuas yog 12 millimeters). Tab sis nyob rau tib lub sij hawm, cov khoom rov qab tiv thaiv qhov kub thiab txias hloov. Nws tseem tsim nyog sau cia tias cov kav dej V altek tau sewn siv txoj kev organosilane.
Prandelli
Nov yog ib lub tuam txhab tsis tshua muaj nyob hauv Russia. Cov kav dej no yog tsim nyob rau hauv ltalis. Txawvmuaj ob txheej polyethylene. Kev tshuaj xyuas hais tias lub neej kev pabcuam ntawm cov khoom zoo li no yog qhov siab tshaj plaws. Tab sis tib lub sij hawm muaj ib qho kev rho tawm - tus nqi siab. Xws li cov khoom raug nqi ob zaug ntau dua li Lavxias teb sab counterparts los ntawm ProExpert. Txoj kab uas hla - 16 millimeters, stitching hom - PE-XB.
Henco
Cov kav hlau-yas no yog tsim hauv Belgium. Lawv lub ntsiab sib txawv yog tias lawv tau them nrog cov xim corrugation. Qhov no muaj txiaj ntsig zoo rau kev sib txawv ntawm cov kua kub thiab txias. Nws tau raug sau tseg tias cov khoom zoo li no yog qhov ruaj khov thiab yooj yim rau nruab. Kev pab lub neej - mus txog 50 xyoo, thaum lub chaw tsim khoom warranty - 12 xyoo.
Oventop
Cov kav dej no yog los ntawm cov chaw tsim khoom German. Lub tuam txhab nthuav tawm Copipe HS kab, uas muaj peb txheej txheej. Nws lub ntsiab feature yog tias yog cov txheej txheej sab nrauv puas lawm, cov yam ntxwv ntawm cov yeeb nkab yog khaws cia tag nrho. Nws tsis tas yuav hloov lossis kho.
Cov yeeb nkab puas tuaj yeem tiv taus siab txog kaum cua sov thiab kub txog +100 degrees Celsius. Raws li rau qhov ntev, Oventop yog 16 mm hlau-yas yeeb nkab. Muag hauv bays ntawm 50, 100 lossis 200 meters. Tuav nws cov duab zoo.
Zaj lus
Yog li, peb pom tias cov yeeb nkab hlau yog dab tsi. Raws li koj tuaj yeem pom, cov khoom no muaj ntau qhov zoo piv rau cov qauv hlau lossis cov qauv yas. Cov kav dej zoo li no tiv taus qhov sib txawv ntawm qhov kub thiab txias, tuaj yeem ua txhua yam thiab txuas nrog sivpa fittings. Tsis tas li ntawd, lawv tuaj yeem siv hauv tsev thiab sab nraum zoov (thiab txawm nyob hauv av). Raws li kev xaiv, qhov kev xaiv zoo tshaj plaws yuav yog cov khoom lag luam nrog lub cheeb ntawm 16 lossis 20 millimeters nrog ob- lossis peb txheej tsim. Nws yuav yog cov yeeb nkab pheej yig thiab hloov tau yooj yim uas yuav tiv taus tag nrho cov loads tso rau ntawm nws.
